Other questions in this quiz

2. What happens to a wave when it passes a doorway?

  • It doesnt change
  • It defracts
  • It stops

3. If i spend £400 on a solar panel and the panel saves me £20 a year what is the payback time??

  • 10 years
  • 20 years
  • 40 years

4. What are lasers used for?

  • Carrying data through optic fibres
  • remote contols

5. What does monochromatic mean?

  • 1 speed
  • 1 colour
  • 1 wavelength

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